MACHINE FOR MAKING GLASS BOTTLES, &amp;c.



No. 767,515. PATENTE'DAUG. 16, 1904. J. FORSTER. fi

MACHINE FOR MAKING GLASS BOTTLES, 8m.

' APELIOATION FILED DEC. 22, 1903.

110 MODEL. 4 SHEETS-SHEET 1.

Wa t 12 as; e,s v Inrentar:

No. 767,515. PATENTED'AUG. 16, 1904. J. PORSTER; MACHINE FOR MAKING GLASS BOTTLES, m.

APPLICATION FILED DIJO.22,1903.

N0 MODEL. 4 SHEETS-SHEET 2.

' PATENTED AUG. 16, 1904,

J. FORSTER.

MACHINE FOR MAKING GLASS BOTTLES, m.

. APPLICATION FILED 13110.22, 1903.

4 SHEETS-SHEET a.

N0 MODEL.

WE: n. 8.55 6/5 MAM No. 767,515. PATENTED AUG. 16, 1904.

v J. FORSTBR, MACHINE FOR MAKING GLASS BOTTLES, m.

APPLICATION FILED DBO. 22, 1903.

N0 MODEL. 4 SHEETS-SHEET 4 IIIIHHIIHII 'l W t/ eases; I7LkeILi'or1 UNTTED STATES Patented August 16, 1904.

PATENT rrrcn.

MACHINE FOR MAKING GLASS BOTTLES, 81.0.

SPECIFICATION forming part of Letters Patent No. 767,515, dated August 16, 1904.

Application filed December 22, 1903. Serial No. 186,190. (No model.) I

To all whom it may concern:

Be it known that I, J OHN FoRsrnR, a subject of the King of England, and a resident of St. Helens, county of Lancaster, England, have invented certain new and useful Improvements in or Relating to Machines for Making Glass Bottles and the Like, of which the following is a specification.

This invention relates to machines for making glass bottles and the like, and has special reference to the mechanism for forming the inside of the neckfor example, the inside screw-thread, groove, or recessto accommodate a suitable stopper or cork.

The invention is particularly applicable to machines which comprise one or more measuring and neck molds working in conjunction with a finishing-mold, in which the bottle is formed by the action of compressed air and the like. In such machines the molten glass is poured or cast round a mandrel inserted in the neck-mold, this mandrel being afterward withdrawn.

In machines according to this invention mechanism is provided which gives a rotary or in some cases a rotary and longitudinal motion to the mandrel as it is withdrawn, and in the case of a bottle having an inside screwthread the rotary and longitudinal movements take place simultaneously, the mandrel being provided with a screwed portion having a pitch corresponding to that of a tap or pattern-screw attached to the end of the mandrel. The mechanism for moving the mandrel may be operated by hand or automaticallyduring the working of the machine.

In the accompanying drawings, which illustrate portions of various machines all according to this invention, Figures 1 and 2 are elevations'taken at right angles to each other, Fig. 1 being partly in section. Figs. 3 and 4 are respectively a side elevation, partly in section, and plan of part of another form of machine.

Like letters indicate like parts throughout the drawings.

All the figures illustrate parts of machines in which the neck-mold is attached to a carrier which can be rotated in order to bring the neck-mold into juxtaposition with the measuring-mold and the finishing-mold, this rotation being made use of to bring about the automatic operation of the mandrel mechanism. The measuring and finishing molds and some other details of the machines which do not form part of the present invention are not illustrated or described.

In the construction illustrated in Figs. 1 and 2 the carrier-arm A is mounted upon a frame or bar A rotatable about a shaft A held in hearings on a fixed standard A. The mandrel E is provided with a spur-wheel H, gearing with asimilar wheel J, free to rotate on a spindle J screwed into the carrier-arm A This wheel J has attached to it a miter-pinion J engaging with another miter-pinion, K, on the end'of a rotatable shaft K, the other end of this shaft carrying a sprocket-pinion L, geared by a chain L to a stationary sprocketwheel L mounted uponthe shaft A For purposes of adjustment the sprocket-wheel L is mounted eccentrically, as shown in Fig. 2. The handles C (shown in Fig. 3) are for opening and closing the neck-mold C and have no particular reference to the subject-matter of this invention. As in the construction illustrated in Fig. 1, compressed air is passed through the carrier-arm A and the opening A in that arm is joined by a pipe to the opening A in the boss of the bar A the air being supplied to the interior of that boss through the shaft A*, which is made hollow for that purpose.

In the position indicated in the drawings the tap F has been withdrawn from the neckrnold and the bottle removed after finishing.

If now the frame A be rotated for half a revolution, as is usual in this type of machine, to invert the neck-mold and bring it beneath the measuring-mold ready for a fresh supply of molten glass, the gearing connecting the spur-wheel H and the fixed sprocket-wheel L rotates the mandrel E and causes it to travel downward relatively to the neck-mold until the collar F closes the opening, when it is ready to have the molten glass cast round it in the preparation of the next bottle.

Figs. 3 and 4 illustrate part of a double machine that is, one in which the carrier is provided with two neck-molds working in con- ICO junction with two measuring-molds and one linishingmold, and the mechanism is designed so that the mandrel closes one neckmold and opens the other as the carrier is revolved. The carrier A is formed with two arms and is mounted so that it can be rotated about its horizontal center line. Each of the arms is furnished with a screwed plug B, passing through it and held in place by nuts B A gland-plug B is also fitted together with a plug B, which serves, as in the constructions previously described, to support the outer casing of the neck-mold C. Bolted to the center of the carrier A is a bracket M, having a square bush M, threaded to receive the screwed portion E of a mandrel E. This mandrel extends through both the arms of the carrier A and is furnished with a tap F at each end and with a spur-wheel H near the central screwed portion. The end of the bracket M is recessed to accommodate the enlarged end N of a shaft N, adjustably fixed to a standard A. On this shaft N is fixed a bevel-wheel N gearing with a bevel-pinion N, carried free to rotate by a bracket N, bolted to the bracket M. The base of this bracket N is in the form of a plate, and it is slipped over the smaller end of the shaft N before that shaft is fixed to the standard A or the'bevelwheel N mounted upon it. The plate is then bolted to the bracket M and forms a cover inelosing the enlarged end of the shaft N, keeping it in alinement with the bracket M. Attached to the bevel-pinion N is a spur-wheel N gearing with a wheel H on I the mandrel.

When in the operation of the machine the carrier A is rotated, the bracket M also turns about its longitudinal axis and the bevel-pinion N" is forced by its engagement with the fixed bevel-wheel N to rotate and through the spur-wheels N and H and the screw E causes the mandrel to rotate and at the same time to move longitudinally, so that one tap F is inserted and the other withdrawn from its neck-mold. In this construction the compressed air for blowing the bottle in the finishing-mold after the neck has been formed passes through the pipe A in the carrier and enters the passage A in whichever arm is in the lower position.

In the position shown in Fig. 4 the tap F on ,the upper end of the mandrel is in its neckmold and the lower one is withdrawn. The gear is arranged so that these positions shall be exactly reversed when the carrier A is turned through half a revolution. In this as in the other constructions it is convenient to provide a spring-catch or other device, so that the turning of the carrier can be stopped at a definite point.

Although the constructions described are primarily intended for making inside screwthreads or grooves, it is to be understood that the same or similar mechanisms can be used for operating mandrels having their lower ends adapted to form plain or recessed bores in the necks of bottles intended for ordinary cork or similar stoppers.

Apparatus according to this invention forms the inside of the bottle-necks with greater ac curacy, uniformity, and quickness than the hand appliances now in use for the purpose and, further, saves the labor and costof reheating the necks of the bottles or other articles.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In amachine for making glass bottles and the like, the combination of a rotatable carrier, a neck-mold mounted on such carrier, a screwed mandrel axially in line with said neck-mold and mounted in a threaded support on the carrier, an inside-neck former on said mandrel and gear operated by the rotation of the carrier to rotate the mandrel substantially as and for the purpose set forth.

2. In a machine for making glass bottles and the like, the combination of a rotatable carrier, two neck-molds mounted on such carrier, a screwed mandrel axially in line with the neckmolds and mounted in a central threaded support on the carrier, an inside-neck former on each end of the mandrel and gear operated by the rotation of the carrier to rotate the mandrel substantially as and for the purpose set forth.

3. In amachine for making glass bottles and the like, the combination of a rotatable carrier, two neck-molds mounted on such carrier, a screwed mandrel axially in line with the neckmolds and mounted in a central threaded support on the carrier, an inside-neck former on each end of the mandrel, a spur-wheel on the mandrel, a stationary bevel-wheel mounted eoaxially with the carrier and gear connecting the stationary bevel-wheel and the spur-wheel on the mandrel, substantially as and for the purpose set forth.

4. In a machine for making glass bottles and the like, the combination of a rotatable carrier, two neck-molds mounted on such carrier, a screwed mandrel axially in line with the neckmolds and mounted in a central threaded support on the carrier, a tap or pattern-screw on each end of the mandrel, a spur-wheel on the mandrel, a stationary bevel-wheel mounted coaxially with the carrier and gear connecting the stationary bevel-wheel and the spur-wheel on the mandrel. substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN FORSTER.

Witnesses:

HAROLD I/VADE, A. J. FRENCH. 

